(Schiedea adamantis)
Schiedea adamantis, commonly known as Diamond Head schiedea, is a species of flowering plant in the carnation family, Caryophyllaceae, that is endemic to the island of O-ahu in Hawaii. It inhabits low shrublands on steep slopes along the northwest rim of Diamond Head Crater. Associated plants include nehe (Lipochaeta lobata var. lobata), k-welu (Eragrostis variabilis), -akoko (Euphorbia degeneri), and -ilima (Sida fallax). There are only about 30 individuals remaining, and they are threatened by habitat loss.